Composition for finishing fabrics and fibrous materials



' HEINRICH IBERTSCH, F CHEIMNITZ, GERMANY, ASSIGNOR TO THE COMPANY H. TH.

Patented Nov. '3, 1931 UNITED srATEs PATENT OFFICE BOHME A. G., OF CHEMNITZ, GERMANY, A QORPORATION OF GERMANY COMPOSITION FOR FINISHING FABRICS AND FIBROUS MATERIALS No Drawing. Application filed July 9, 1928, Serial No. 291,502, and in Germany July 11, 1927.

This invention relates to the treatment of fabrics and fibrous materials for applying a brilliant finish thereto and is particularly concerned with compositions for use in the .reatment of such material to impart the desired luser in connection with the conventional treatment of such materials with finishes which contain substantial quantities of inorganic salts for increasing the weight of the fabric, such finishes being hereinafter referred to as salt-finishes.

It is well known that in general salt-finishes do not impart any particular lustre to the. material. For the latter purpose it was necessary, hitherto, also to cover the material with a'thin Wax layer and then to render this lustrous by hot calendering. This operation may be combined with that of the application of the finishing agent if use is made of an emulsion of substances adapted to impart lustre to the material such as paraflin, Waxes,

stearic acid or the like, said emulsion being sufiicientl resistantto salts to permit said emulsified substances being added direct to the finishing agent. This will be the case if the emulsions ofthe lustre-imparting means are prepared with the aid ofaromatic sulphoacids (for example, dlpropyl-naphthalene sulphonic acid) as a dispersing agent or if, as emulsifiers use is made of sulphonated oils such as will'pro'duce an emulsion which is highly resistant to decompositionby concentrated solutions of.inor anic salts, such as Epsom salt. In most instances these sulphonated oils will be preparations wherein sulphonation has been carried to an extent beyond that occurring in the preparation of Turkey red oils, for example preparations obtained from oils by sulphonation with sulphuric acid inexcess in the presence of inorganic ororganic anhydrous acids, acid anhydrides or acid chlorides, possibly at temperatures below 0.

Ewample finishing liquor is produced to which, well agitated, is added 10 kgs. of a paraflin or wax emulsion produced by the use of dipropylnaphthalene sulphonic acid. This finishing agent is perfectly homogeneous and does not throw down any clots of magnesia com- "pounds. The material displays a beautiful lustre after the finishing and calendering.

I claim 1. A finishing composition for increasing the weight of and imparting luster to fabrics and fibrousmaterials, comprising a mixture of an inorganic finishing salt solution with an emulsion of a luster producing medium, said emulsion possessing a high degree of resistance to decomposition by the salt.

2. A finishing composition for increasing the weight of and imparting'luster to fabrics and fibrous materials, comprising a mixture of a watery solution of an inorganic finishing salt with a luster producing fatty matter held in dispersion by a sulphonated hydrocarbon derivative which is not decomposed by said salt solution. a

3. A finishing composition for increasing the Weight of and imparting luster to fabrics and fibrous materials, comprising a mixture of a watery solutionof an inorganic finishing salt with a luster producing fat-tymatter held in dispersion by an aromatic sulphonic acid alkylated in the nucleus. f

4.A finishing composition for increasing the weight of and imparting luster to fabrics and fibrous materials, comprising a mixture of a watery solution of an inorganic finishing salt with a luster producing fatty matter held in dispersion by an oil sulphonated to an exteiit beyond that occurring in Turkey-red 01 s.

5. A finishing composition for increasing the weight of and imparting luster to fabrics and fibrous materials com rising a mixture of a watery solution of psom salt with stearic acid held in dispersion by dipropylnaphthalene s'ulphonic acid.

DR. HEINRICH BERTSCH. 

